HIERARCHICAL BEAMFORMING AND RECIPROCITY CALIBRATION FOR HYBRID MIMO SYSTEMS

    公开(公告)号:US20240333361A1

    公开(公告)日:2024-10-03

    申请号:US18419358

    申请日:2024-01-22

    CPC classification number: H04B7/0686 H04B7/043 H04B17/12 H04B17/221

    Abstract: A hybrid MIMO system comprises N digital transceiver chains and N analog beamformers, each coupled to one of the digital transceiver chains and comprising M analog transmitter (TX) chains and M analog receiver (RX) chains. One of the analog RX chains is an RX reference node and one of the analog TX chains is a TX reference node. A processor is coupled to a calibration transceiver, the transceiver chains, and the beamformers. For each beamformer the processor measures, using the corresponding transceiver chain and the calibration transceiver, TX and RX phase responses and TX and RX magnitude responses of the TX and RX reference nodes, respectively, determines a reciprocity calibration based on a phase difference between the TX and RX phase responses and a magnitude difference between the TX and RX magnitude responses, and applies the reciprocity calibration to stored beam definitions to correct for the phase and magnitude differences.

    SCALABLE 2-D JOINT PHASE-TIME ARRAYS AND BEAMFORMING OPERATION

    公开(公告)号:US20240313398A1

    公开(公告)日:2024-09-19

    申请号:US18437046

    申请日:2024-02-08

    CPC classification number: H01Q3/36 H01Q21/061

    Abstract: Scalable 2D joint phase-time arrays (JPTA) support multiple simultaneous RF beams without sacrificing array gain. A 2D JPTA comprises M antenna groups that each comprise N antennas, each coupled to one of N phase shifters. The array comprises M delay elements configured to: apply a time delay to a first signal to be transmitted by one of the antenna groups while each phase shifter in the group phase shifts the time-delayed first signal and feeds the phase-shifted-and-time-delayed first signal to the corresponding antenna, or apply the time delay to a second signal received from the group while each phase shifter phase shifts a third signal received from the antenna, the second signal being a combination of the phase-shifted third signals. The time delays produce a beam spread in a first dimension of the array such that multiple beams are formed in different directions.

    DUAL POLARIZED BASE STATION AND USER EQUIPMENT ANTENNA FOR UPPER MID-BAND X-MIMO

    公开(公告)号:US20240258701A1

    公开(公告)日:2024-08-01

    申请号:US18419306

    申请日:2024-01-22

    CPC classification number: H01Q9/0464 H01Q9/045 H01Q21/065

    Abstract: An apparatus includes a substrate and a plurality of antenna elements on the substrate and arranged according to an antenna configuration. The antenna configuration includes a rectangular antenna patch, and first and second pairs of circular antenna patches. The first pair of circular antenna patches supports a first angular polarization, wherein the circular antenna patches of the first pair are coupled to opposite corners of the rectangular antenna patch. The second pair of circular antenna patches supports a second angular polarization that is orthogonal to the first angular polarization, wherein the antenna patches of the second pair are coupled to opposite corners of the rectangular antenna patch, wherein each of the antenna patches of the first pair are positioned on corners adjacent to both of the antenna patches of the second pair.

    CIRCULAR ANTENNA ARRAY DESIGN FOR FUTURE 6G TBPS WIRELESS COMMUNICATIONS

    公开(公告)号:US20240056145A1

    公开(公告)日:2024-02-15

    申请号:US18364424

    申请日:2023-08-02

    CPC classification number: H04B7/0608 H04B7/0634 H04B7/0447

    Abstract: Configuration of a line of sight, multiple input, multiple output circular antenna array involves setting an integer number of antenna arrays up to a number of antenna ports for the circular antenna array and a maximum radius for any antenna ring within the circular antenna array. A capacity is determined for each of a plurality of different combinations of each of: an integer number of antenna rings up to a predetermined maximum number of antenna rings, a number of the antenna arrays for each of the number of antenna rings, and angular offsets for that antenna arrays on each of the antenna rings. The determined capacities for the plurality of different combinations are compared.

    2D ACTIVE ANTENNA ARRAY OPERATION FOR WIRELESS COMMUNICATION SYSTEMS
    6.
    发明申请
    2D ACTIVE ANTENNA ARRAY OPERATION FOR WIRELESS COMMUNICATION SYSTEMS 有权
    2D无线通信系统的主动天线阵列操作

    公开(公告)号:US20160135180A1

    公开(公告)日:2016-05-12

    申请号:US14935172

    申请日:2015-11-06

    Abstract: A method for operating a large scale antenna array in a wireless communication system includes receiving one or more signals. The one or more signals include information for beamforming to a plurality of user equipments (UEs) using a full-dimensional multiple-input multiple-output (FD-MIMO) beamforming scheme. The FD-MIMO beamforming scheme includes same time resources and same frequency resources that are co-scheduled to the plurality of UEs. The method further includes identifying a time delay of the one or more signals associated with one or more antenna arrays that are distributed in the large scale antenna array and performing a multi-user (MU) joint beamforming on the one or more signals to one or more UEs.

    Abstract translation: 一种用于在无线通信系统中操作大规模天线阵列的方法包括接收一个或多个信号。 一个或多个信号包括使用全维多输入多输出(FD-MIMO)波束成形方案的波束成形到多个用户设备(UE)的信息。 FD-MIMO波束成形方案包括与多个UE共同调度的相同的时间资源和相同的频率资源。 该方法还包括识别与分配在大尺度天线阵列中的一个或多个天线阵列相关联的一个或多个信号的时间延迟,并且对一个或多个信号执行多用户(MU)联合波束成形,以一个或多个 更多的UE。

    ADAPTIVE BEAMFORMING BASED ON JPTA FREQUENCY SELECTIVE SYSTEMS FOR SMART REPEATERS

    公开(公告)号:US20240121625A1

    公开(公告)日:2024-04-11

    申请号:US18479742

    申请日:2023-10-02

    CPC classification number: H04W16/28 H01Q3/22 H04L5/0023 H04W16/26

    Abstract: A smart repeater includes a transceiver configured to receive a reference signal, receive, from a base station (BS), a subcarrier allocation for a plurality of user equipments (UEs), receive, from the BS, a downlink (DL) beam associated with the plurality of UEs, and retransmit the DL beam. The smart repeater further includes a processor, operatively coupled to the transceiver, the processor configured to determine a beam split configuration for the DL beam based on the subcarrier allocation, and cause the transceiver to retransmit the DL beam according to the beam split configuration. To retransmit the DL beam according to the beam split configuration the transceiver is further configured to generate a frequency dependent beam for each of the plurality of UEs, and direct the frequency dependent beam for each of the plurality of UEs to a UE associated with the frequency dependent beam.

    BROADBAND PASSIVE LOAD MODULATION BALANCE POWER AMPLIFIER

    公开(公告)号:US20240039477A1

    公开(公告)日:2024-02-01

    申请号:US18174518

    申请日:2023-02-24

    Abstract: Methods and apparatuses for facilitating wide bandwidth power amplification with high efficiency for analog RF signals. A passive load modulated balanced amplifier (LMBA) device comprises a balanced power amplifier (BPA) and a directional coupler. The BPA comprises a first power amplifier (PA) configured to amplify a first portion of an input power, a second PA configured to amplify a second portion of the input power, an isolation port, and an output port that outputs the amplified first and second portions of the input power as an output power. The directional coupler is configured to provide a portion of the output power from the output port to the isolation port to modulate a load impedance of the first and second PAs.

    TRANSMIT-RECEIVE ISOLATION FOR A DUAL-POLARIZED MIMO ANTENNA ARRAY

    公开(公告)号:US20230046675A1

    公开(公告)日:2023-02-16

    申请号:US17815908

    申请日:2022-07-28

    Abstract: An apparatus includes a substrate, a first antenna panel, a second antenna panel, and an antenna isolator. The first antenna panel is coupled on the substrate and includes an array of first antenna elements. The second antenna panel is coupled on the substrate and includes an array of second antenna elements. The antenna isolator is coupled on the substrate and including a plurality of walls extending outwardly from the substrate along a length of the substrate between the first antenna panel and the second antenna panel. The antenna isolator reduces reduce wave propagation between the array of first antenna elements and the array of second antenna elements.

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